Alveolar Macrophages Inherently Express Programmed Death-1 Ligand 1 for Optimal Protective Immunity and Tolerance.

Alveolar Macrophages Inherently Express Programmed Death-1 Ligand 1 for Optimal Protective Immunity and Tolerance.
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DOI:
10.4049/jimmunol.2100046
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发表时间:
2021-07-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Qu Z
Qu Z
中科院分区:
其他
文献类型:
--
作者:
Sun F;Li L;Xiao Y;Gregory AD;Shapiro SD;Xiao G;Qu Z

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Macrophages play a central role in lung physiology and pathology. Herein, we show in mice that alveolar macrophages (AMs), unlike other macrophage types [interstitial macrophages (IMs), and peritoneal and splenic macrophages], constitutively express PD-L1, thereby possessing a superior phagocytic ability and the capacity to repress cytotoxic T lymphocytes (CTLs) by cis- and trans-interacting with CD80 and PD-1, respectively. This extraordinary ability of AMs assures optimal protective immunity and tolerance within the lung. These findings uncover a unique characteristic of AMs and an innate immune function of PD-L1 and CD80, therefore help understand lung physiology, diseases and PD-L1/PD-1-based immunotherapy.
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